410S Stainless Steel Plate | Corrosion-Resistant & Weldable Alloy
410S stainless steel is a non-hardening, corrosion-resistant alloy known for its excellent weldability and durability. Sandmeyer Steel offers 410S stainless steel plates in a range of thicknesses to meet your material needs.
Available thicknesses for Alloy 410S:
| 3/16" | 1/4" | 5/16" | 3/8" | 1/2" | 5/8" | 3/4" | 7/8" |
| 4.8mm | 6.3mm | 7.9mm | 9.5mm | 12.7mm | 15.9mm | 19mm | 22.2mm |
| 1" | 1 1/4" | 1 1/2" | 1 3/4" | 2" | 2 1/2" | 3" | |
| 25.4mm | 31.8mm | 38.1mm | 44.5mm | 50.8mm | 63.5mm | 76.2mm |
Specification Sheet Overview
for Alloy 410S (UNS S41008)
W. Nr. 1.4000:
General Properties
Alloy 410S (UNS S41008) is a low carbon, non–hardening modification of Alloy 410 (UNS S41000) the general purpose 12% chromium martensitic stainless steel. The low carbon and a small alloy addition minimize austenite formation at high temperatures which restricts the alloys ability to harden. 410S remains soft and ductile even when rapidly cooled from above the critical temperature. This non-hardening characteristic helps prevent cracking when the alloy is exposed to high temperatures or welded. 410S is completely ferritic in the annealed condition. It exhibits adequate corrosion resistance similar to 410 and good oxidation resistance.
Corrosion Resistance
The corrosion resistance of Sandmeyer Steel 410S stainless steel is similar to type 410. It resists corrosion in atmospheric conditions, fresh water, mild organic and mineral acids, alkalis and some chemicals. It’s exposure to chlorides in everyday activities (e.g., food preparation, sports activities, etc.) is generally satisfactory when proper cleaning is performed after exposure to use.
General Corrosion Behavior Compared With Other Nonaustenitic Stainless Steels*
Corrosion Resitance - 410S
Solution at 120°F (49°C) | ||||||
| Alloy 409 | Alloy 410S | Alloy 420 | Alloy 425 Mod | Alloy 440A | Alloy 430 | |
| Acetic Acid | 0.88 (0.022) | 0.079 (0.002) | 1.11 (0.028) | 4.79 (0.122) | 2.31 (0.0586) | 0.025 (0.0006) |
| Phosphoric Acid | 0.59 (0.002) | 0.062 (0.002) | 0.068 (0.002) | 0.593 (0.015) | 0.350 (0.009) | 0.029 (0.001) |
*Hardened martensitic grades were tested after tempering at 400°F (204°C)
As shown in the above table, 410S has good corrosion resistance to low concentrations of mild organic and mineral acids.
Oxidation Resistance
The oxidation resistance of 410S stainless steel is good. It can be used in continuous service up to 1300°F (705°C). Scaling becomes excessive above 1500°F (811°C) in intermittent service.
Formability
410S stainless steel can be easily formed by spinning, bending and roll forming.
Chemical Analysis
The austenitic stainless steels are considered to be the most weldable of the high-alloy steels and can be welded by all fusion and resistance welding processes.
| Chromium | 11.5 min.-14.5 max. | Sulfer | .030 max. |
| Nickel | 0.60 max. | Silicon | 1.00 max. |
| Carbon | 0.08 max. | Iron | Balance* |
| Manganese | 1.00 max. | Phosphorus | 0.040 max. |
*Alloy predominates remaining composition. Other elements may be present only in minimal quantities.
Density
0.28 lbs/in3
7.73 g/cm3
Magnetic Permeability
0.28 lb/in3
7.73 g/cm3
Specific Heat
0.11 BTU/lb-°F (32 – 212°F)
0.46 J/kg-°K (0 – 100°C)
Modulus of Elasticity
29 x 106 psi
200 GPa
Thermal Conductivity 212°F (100°C)
187 BTU/hr/ft2/ft/°F
26.9 W/m-°K
Melting Range
2700 – 2790°F
1480 – 1530°C
Electrical Resistivity
23.7 Microhm-in at 68°C
60 Microhm-cm at 20°C
Linear Coefficient of Thermal Expansion
| In/in°F | um/m-°K | |
|---|---|---|
| 32 - 212°F (0 - 100°C) | 6.0 x 10-6 | 10.8 |
| 32 - 600°F (0 - 315°C) | 6.4 x 10-6 | 11.5 |
| 32 - 1000°F (0 - 538°C) | 6.7 x 10-6 | 12.2 |
| 32 - 1200°F (0 - 649°C) | 7.5 x 10-6 | 13.5 |
Mechanical Properties
Typical Room Temperature Mechanical Properties, Mill Annealed
0.2% Offset | Strength | in 2 in. | Rockwell B | percent of area |
||
|---|---|---|---|---|---|---|
| psi | (MPa) | psi | (MPa) | |||
| 42,000 | 290 | 64,400 | 444 | 33 | 75 | 65 |
Fabrication Data
Heat Treatment
The alloy can not be hardened by heat treatment. It is annealed in the 1600 – 1650°F (871 – 899°C) range and then air cooled to relieve cold working stresses. 410S should not be exposed to temperatures of 2000°F (1093°C) or above due to embrittlement. If excessive large grains are encountered after annealing mildly cold-worked material, the annealing temperature should be decreased to a range of 1200 – 1350°F (649 – 732°C) range.
Surface Preparation
For maximum corrosion resistance to chemical environments, it is essential that the 410S surface be free of all heat tint or oxide formed during annealing or hot working. All surfaces must be ground or polished to remove any traces of oxide and surface decarburization. The parts should then be immersed in a warm solution of 10-20% nitric acid followed by a water rinse to remove any residual iron.
Machining
Alloy 410S should be machined in the annealed condition using surface speeds of 60 to 80 feet (18.3 – 24.4 m) per minute.
Welding
For maximum corrosion resistance to chemical environments, it is essential that the 410S surface be free of all heat tint or oxide formed during annealing or hot working. All surfaces must be ground or polished to remove any traces of oxide and surface decarburization. The parts should then be410S is generally considered to be weldable by the common fusion and resistance techniques. Special consideration should be given to avoid brittle weld fractures during fabrication by minimizing discontinuities, maintaining low weld heat input and occasionally warming the part somewhat before forming. 410S is generally considered to have slightly poorer weldability than the most common ferritic stainless steel grade 409. A major difference can be attributed to the alloy addition to control hardening which results in the need for higher heat input to achieve penetration during arc welding. When a weld filler is required, AWS E/ER 309L or 430 filler material is most often specified.immersed in a warm solution of 10-20% nitric acid followed by a water rinse to remove any residual iron.
Alloy 410S Stainless Steel – Frequently Asked Questions
1. What is Alloy 410S stainless steel?
Alloy 410S (UNS S41008) is a low-carbon, non-hardening modification of 410 stainless steel. It is a 12% chromium ferritic stainless steel known for its enhanced weldability, excellent oxidation resistance, and good corrosion resistance. Unlike 410, it does not harden when rapidly cooled from high temperatures, making it ideal for welded applications.
2. How does Alloy 410S differ from standard 410?
Alloy 410S contains lower carbon and slight alloy modifications to reduce hardenability. This allows it to remain soft and ductile even after high-temperature exposure, whereas 410 can become brittle. 410S is also fully ferritic in the annealed condition and offers improved weldability.
3. What are common applications for Alloy 410S?
410S stainless steel is widely used in high-temperature and mildly corrosive environments, including:
• Heat exchangers and distillation trays
• Petrochemical and refining equipment
• Annealing boxes and thermal processing racks
• Mining and ore processing equipment
• Press plates and quenching racks
4. How corrosion resistant is Alloy 410S?
410S offers good resistance to atmospheric conditions, mild organic and mineral acids, alkalis, and fresh water. It performs well in food processing environments and slightly chlorinated water, though it is not suitable for high-chloride or aggressive oxidizing media.
5. What is the oxidation resistance of Alloy 410S?
Alloy 410S withstands continuous exposure up to 1300°F (705°C) and intermittent exposure up to 1500°F (811°C). Above this range, scaling may occur.
6. Is Alloy 410S magnetic?
Yes. Like most ferritic stainless steels, Alloy 410S is magnetic in all conditions.
7. Can Alloy 410S be welded and formed?
Yes. 410S is considered weldable by common fusion and resistance methods, although precautions should be taken to avoid brittle weld fractures. It forms well using bending, roll forming, and spinning techniques.
8. What are the mechanical properties of Alloy 410S stainless steel?
Typical values at room temperature (mill annealed):
• Yield Strength (0.2% offset): 42,000 psi (290 MPa)
• Ultimate Tensile Strength: 64,400 psi (444 MPa)
• Elongation in 2″: 33
• Hardness: 75 Rb
9. What are the physical properties of Alloy 410S?
• Density: 0.28 lbs/in³ (7.73 g/cm³)
• Specific Heat: 0.11 BTU/lb-°F (32 – 212°F) 0.46 J/kg-°K (0 – 100°C)
• Modulus of Elasticity: 29.0 × 10⁶ psi (200 GPa)
• Thermal Conductivity at 212°F: 187 BTU/hr/ft2/ft/°F 26.9 W/m-°K
• Electrical Resistivity: 23.7 Microhm-cm at 68°C 60 Microhm-cm at 20°C
10. What standards apply to Alloy 410S stainless steel?
• ASTM A240
• ASME SA240
11. What thicknesses of Alloy 410S stainless steel plate does Sandmeyer Steel stock?
Sandmeyer Steel stocks Alloy 410S plate in thicknesses ranging from 3/16″ (4.8 mm) through 3″ (76.2 mm).